Threshold cap



FIG. 1 is a profile view of my new design applied to a threshold cap;

FIG. 2 is a profile view thereof illustrated with environmental elements;

FIG. 3 is a top exterior perspective view thereof; and,

FIG. 4 is a top interior perspective view thereof.

The views not shown form no part of the claimed design. The dash-dot lines represent unclaimed boundaries of the claimed design. The dash-dash lines in the figures represent portions and environmental elements that form no part of the claimed design. The bracketed dash-dot lines illustrates a symbolic break such that the portion between the bracketed dash-dot lines forms no part of the claimed design. 

CLAIM The ornamental design for a threshold cap, as shown and described. 